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Education · head to head

Duolingo vs Star Walk 2

Duolingo logo

Duolingo

Education

Learn a language for free, forever

From
Free
Rated
-
Full reviewWebsite
Star Walk 2 logo

Star Walk 2

Education

Freemium stargazing app with a low-cost ad-free upgrade, aimed at casual sky watchers

From
Free
Rated
-
Full reviewWebsite

The short version

  • Each has a real cost: Duolingo free tier includes ads and energy-based hearts system limiting daily practice without paying; Star Walk 2 its object catalogue is far smaller than SkySafari Pro, so it has little to offer once someone wants to go beyond naked-eye stargazing.
  • They diverge on capability: Duolingo covers 40+ languages, Star Walk 2 covers Augmented reality sky view.
  • Prices and features above were last checked on 1 September 2026.

Where they differ

Only the attributes on which Duolingo and Star Walk 2 actually diverge.

Attributes where Duolingo and Star Walk 2 differ
AttributeDuolingoStar Walk 2
Pricing modelUnknownFreemium, low-cost ad-free subscription upgrade
PlatformsiOS, Android, WebiOS, Android, macOS, Windows
Founded2011Unknown

Identical on both: starting price (Free), free tier (Yes), user rating (Not yet rated), category (Education).

What each one covers

Drawn from each product's published feature list. An absence here means we hold no record of it - not that the product lacks it.

Only in Duolingo

  • 40+ languages
  • Gamification
  • Streaks
  • Leaderboards
  • Stories
  • Podcasts
  • Speaking exercises
  • AI tutor

Only in Star Walk 2

  • Augmented reality sky view
  • Time travel mode
  • Satellite tracking
  • Night mode
  • Meteor shower and event alerts
  • Ad-free Plus tier

What people use each for

The jobs each tool is most often brought in to do.

Duolingo

  • Language learningnot Star Walk 2
  • Travel preparationnot Star Walk 2
  • Career developmentnot Star Walk 2
  • Cultural explorationnot Star Walk 2

Star Walk 2

  • A parent wanting a cheap, simple app to show a child the night skynot Duolingo
  • A traveller who wants to identify stars and planets without a big subscription commitmentnot Duolingo
  • A casual stargazer who does not need telescope control or a deep-sky cataloguenot Duolingo
  • Someone wanting satellite pass tracking including the ISS on a budgetnot Duolingo

Where each one falls short

Documented limitations, not opinions. Every one is a constraint you would hit in normal use.

Duolingo

  • Free tier includes ads and energy-based hearts system limiting daily practice without paying
  • Gamification focus may appeal to casual learners but lacks depth for serious language study beyond conversational basics
  • Limited to short, bite-sized lessons without extensive grammar explanations or cultural context

Star Walk 2

  • Its object catalogue is far smaller than SkySafari Pro, so it has little to offer once someone wants to go beyond naked-eye stargazing.
  • It has no telescope control, unlike SkySafari Plus and Pro, so it cannot drive a motorised mount.
  • The free tier carries ads, which some users find intrusive during a stargazing session.
  • It shares a visual style with many similar AR sky map apps, so its differentiation beyond price is limited.
  • Content depth for deep-sky objects and satellite catalogues lags noticeably behind Sky Guide Pro and SkySafari Pro.

Pricing, plan by plan

Duolingo

Free
  • FreeFree
    • All language courses
    • Ad-supported
    • Limited hearts (5-heart system)
  • Super$12.99/month
    • Ad-free
    • Unlimited hearts
    • Extra practice tools
  • Super Family$119.99/year
    • Up to 6 users
    • All Super features
    • Family group
  • Max$undefined/mo
    • All Super features
    • Video Call with Lily
    • Roleplay scenarios

Star Walk 2

Free
  • Star Walk 2Free
    • Core sky map and AR view
    • Ad-supported
  • Star Walk 2 Plus$5.99/year
    • Ads removed
    • Additional sky content

Which should you pick?

Choose Duolingo if

  • You need 40+ languages.
  • You want to start without paying.
  • You work on iOS, Android, Web.
  • You also want gamification.
Duolingo review

Choose Star Walk 2 if

  • You need augmented reality sky view.
  • You want to start without paying.
  • You work on iOS, Android, macOS, Windows.
  • You also want time travel mode.
Star Walk 2 review

Questions people ask

Is Duolingo or Star Walk 2 better?
Neither clearly leads. Duolingo starts at Free and Star Walk 2 at Free, and user ratings are close enough to be indistinguishable. Choose on capability and platform support.
Which is cheaper, Duolingo or Star Walk 2?
Duolingo starts at Free and Star Walk 2 at Free.
Does Duolingo or Star Walk 2 run on more platforms?
Duolingo runs on iOS, Android, Web. Star Walk 2 runs on iOS, Android, macOS, Windows.
Can I use Duolingo for free?
Both have a free tier, so you can try either at no cost before committing.
What is Duolingo best used for?
Duolingo is most often used for language learning, travel preparation, career development, cultural exploration. Of those, language learning and travel preparation are not what Star Walk 2 is typically brought in for.
What can Duolingo do that Star Walk 2 cannot?
Duolingo covers 40+ languages, Gamification, Streaks, Leaderboards. Star Walk 2 covers Augmented reality sky view, Time travel mode, Satellite tracking, Night mode.

Answered from the vendors’ own pages

Duolingo: What is Duolingo's pricing model?

Duolingo offers free tier with ads and limited features, Super Duolingo at $12.99/month (ad-free, unlimited hearts, extra practice), Super Family at ~$119.99/year for up to 6 users, and Duolingo Max with AI features like Video Call and Roleplay.

Source
Star Walk 2: Is Star Walk 2 free?

A free ad-supported version exists; Star Walk 2 Plus removes ads and adds content for a low annual or monthly fee.

Duolingo: Is Duolingo effective for language learning?

Duolingo has 135+ million monthly active users as of Q3 2025, making it the world's most widely used language-learning app. Its gamified approach and free tier have driven massive adoption.

Source
Star Walk 2: Does it support telescope control?

No. For telescope control, SkySafari Plus or Pro is the better choice.

Duolingo: What AI features does Duolingo Max include?

Duolingo Max includes Video Call for conversation practice with AI character Lily and Roleplay for scenario-based speaking practice. As of January 2026, Explain My Answer became free for all users.

Source
Star Walk 2: How does it compare to SkySafari on price?

It is substantially cheaper, but with a much smaller star and deep-sky object catalogue.

Duolingo: Does Duolingo work offline?

Duolingo is primarily online, though it may offer limited offline lesson downloads on some platforms. Full features require internet connection.

Source
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